Klein Tools 65129 2-In-1 Nut Driver, Hex Head Slide Drive, 6-Inch

Unique, patented tip slides back and forth from 1/4-Inch and 5/16-Inch hex sizes. A simple twist of the thumb nut locks in the tip setting. Magnet in hex keeps screw in place regardless of which driver is selected. Classic Cushion-Grip handle for added torque and comfort. Unique, patented tip switches from 1/4-Inch size to 5/16-Inch size Magnetic regardless of which driver is selected Twist the thumb nut to lock tip setting Cushion-Grip handle for added torque and comfort U.S. Patent 7,654,175 B2 Additional Information Type:Hex Driver Application:HVAC Special Features:Slide Drive Tip Size:1/4"", 5/16"" Magnetic:Yes Shank Length:6"" (15.2 cm) Insulated:No Handle Type:Cushion-Grip Handle Length:4.313"" (109.6 mm) Overall Length:10.25"" (26 cm) Weight:0.50 lb (0.23 kg)